What is the difference between the circulatory system of a frog and a human

Males and females of each species have testes and ovaries respectively. On the whole, their organ structure is similar, but frogs have considerably less complex anatomies. They do not have ribs or a diaphragm. Frogs and humans have similar systems, including nervous, circulatory, digestive and respiratory. Both are classified as vertebrates, with a spine and nerves that spread across the body. Both frogs and humans have very developed senses of hearing, managed by the nervous system.

However, frogs can only detect high-pitched sounds with their ears; they detect low-pitched sounds through their skin. Both frogs and humans also have well-developed senses of sight and smell. Both creatures possess a circulatory system, which operates as the heart pumps blood throughout the body. Is the vertebral artery a branch of the aortic arch? What conditions contribute to elevated blood levels of alkaline phosphatase? Are lymphocytes produced in the bone marrow and then migrate to the thymus gland and lymph nodes What is heart disease?

What is the primary cause of heart disease and what symptoms does it How does blood flow back to the heart from the lower extremities, since it is fighting against gravity? In a heart transplant, if the vagus nerve is not re-transplanted, how is the heart rate kept in check? Is heart disease hereditary? Frogs and humans need to breathe for the same reason: to bring oxygen into the body and to expel carbon dioxide.

We both have lungs for these tasks, but that's where most of the similarities end. Frogs live in a different environment than humans, and differences in their respiratory systems reflect that.

Humans breathe exclusively through their lungs, but frogs use their lungs for only part of their respiration. Frog lungs have thinner walls and are almost like balloons. They often fill their lungs to help them stay buoyant when swimming. Both species have bronchial tubes leading to the lungs, but human systems are more complicated, with many branching bronchiole.

The lungs of frogs and humans have alveoli, tiny vessels that make the actual gas exchange. But the alveoli in humans are more densely packed because we breathe only through our lungs.